Journal article

Pre-exercise carbohydrate and fat ingestion: effects on metabolism and performance

M Hargreaves, JA Hawley, A Jeukendrup

Journal of Sports Sciences | TAYLOR & FRANCIS LTD | Published : 2004

Abstract

A key goal of pre-exercise nutritional strategies is to maximize carbohydrate stores, thereby minimizing the ergolytic effects of carbohydrate depletion. Increased dietary carbohydrate intake in the days before competition increases muscle glycogen levels and enhances exercise performance in endurance events lasting 90 min or more. Ingestion of carbohydrate 3-4 h before exercise increases liver and muscle glycogen and enhances subsequent endurance exercise performance. The effects of carbohydrate ingestion on blood glucose and free fatty acid concentrations and carbohydrate oxidation during exercise persist for at least 6 h. Although an increase in plasma insulin following carbohydrate inges..

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University of Melbourne Researchers